Synthesis and properties of dithienometallole-pyridinochalcogenadiazole alternate polymers
Synthesis and properties of dithienometallole-pyridinochalcogenadiazole alternate polymers
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DOI：
10.1038/pj.2013.13
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发表时间：
2013-09
期刊：
影响因子：
2.8
通讯作者：
J. Ohshita;Masayuki Miyazaki;Fei-Bao Zhang;Daiki Tanaka;Morihara Yasushi
中科院分区：
文献类型：
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作者：
J. Ohshita;Masayuki Miyazaki;Fei-Bao Zhang;Daiki Tanaka;Morihara Yasushi
由二硫代金属烯（金属= Si或Ge）和吡啶二醇二唑（硫= S或Se）组成的供受体型交替聚合物，分子量为M n= 5700 ~ 7400 (M w/M n= 1.3 ~ 1.7)，由相应的二（三甲基锡基）二硫代金属烯和二溴吡啶二醇二唑进行Stille偶联反应得到黑色固体。在氯苯溶液中，聚合物的紫外可见吸收光谱显示出以732 ~ 745 nm为中心的高红移宽带。以该聚合物与pc70bm共混膜为活性层制备了本体异质结型聚合物太阳能电池，该聚合物的最大功率转换效率为3.46%。
Donor–acceptor-type alternate polymers composed of dithienometallole (metal= Si or Ge) and pyridinocalcogenadiazole (chalcogen= S or Se) units with the molecular weights of M n= 5700–7400 (M w/M n= 1.3–1.7) were obtained as black solids by the Stille coupling reactions of the corresponding bis (trimethylstannyl) dithienometallole and dibromopyridinochalcogenadiazole. Ultraviolet-visible absorption spectra of the polymers showed highly red-shifted broad bands centered at 732–745 nm in chlorobenzene solutions. Bulk heterojunction-type polymer solar cells with blend films of the polymers and PC 70 BM as the active layers were fabricated, and a maximum power conversion efficiency of 3.46% was obtained using the dithienogermole-pyridinothiadiazole polymer.